"People will sign on to their Google Mail accounts and see OpenClass as one of their available products at the top of their Web browser. They will also be able to use Gmail and Google Docs from within the program."

Is it just me, or is this a bit of a Trojan horse to get students signed up for the Google ecosystem in bunches of 25 at a time?

As both a teacher and a student, I've never been happy with any LMS I've used. I try to avoid them whenever possible.